punt on this until we actually need it

examples.txt

@@ -18,7 +18,6 @@ Pointers
 Structs
 Methods
 Interfaces
-# Embedding
 Errors
 Goroutines
 Channels

examples/embedding/embedding.go

@@ -1,54 +0,0 @@
-package main
-
-import "math"
-import "fmt"
-
-type Shape interface {
-    area() float64
-}
-
-type Circle struct {
-    x, y, r float64
-}
-
-func (c *Circle) area() float64 {
-    return math.Pi * c.r * c.r
-}
-
-type Rectangle struct {
-    x1, y1, x2, y2 float64
-}
-
-func distance(x1, y1, x2, y2 float64) float64 {
-    a := x2 - x1
-    b := y2 - y1
-    return math.Sqrt(a*a + b*b)
-}
-
-func (r *Rectangle) area() float64 {
-    l := distance(r.x1, r.y1, r.x1, r.y2)
-    w := distance(r.x1, r.y1, r.x2, r.y1)
-    return l * w
-}
-
-func totalArea(shapes ...Shape) float64 {
-    var area float64
-    for _, s := range shapes {
-        area += s.area()
-    }
-    return area
-}
-
-func main() {
-    circle := Circle{x: 0, y: 3, r: 5}
-    rectangle := Rectangle{x1: 3, x2: 10, y1: 5, y2: 7}
-
-    area := 0.0
-    for _, s := range []Shape{&circle, &rectangle} {
-        area += s.area()
-    }
-    fmt.Println(area)
-}
-
-// todo: is this named wrong?
-// todo: note about embedding access